Compound universal chuck



J. J, REILLY.

COMPOUND UNIVERSAL CHUCK. APPLICATION FILED MAR. 22. 1920. I

Patented Feb. 22, 1921.

warren enn J'.-RE1LLY, or 'rnov, EW YORK.

CQMPOUND nivIvERsAL CHUCK,

seavca.

To all whom it may concern:

Be it known that I, JOHN J. REILLY, a citizen of the United States of America, re sidin at Troy, in the county or" Rensselaer and State of New York, have invented certain new and useful Improvements in (Joinpound Universal Chucks, of which the following is a specification.

This invention relates to a chuck designed particularly for use by die makers, in the use of which practically any and all characters of work may be properly held, either on a bench or in a machine, and the chuck as a whole readily and conveniently adjusted to any angle convenient for the operator in this class of Work.

The improved chuck comprises abase in which the holder proper is mounted for a substantially universal movement with relation thereto, means being provided whereby such holder may be secured at any desired" adjustment relative to the base. The free end of the holder is adapted for the convenient connection thereto of the immediate work support, being adapted in this particular for work supports of different character. The invention in the preferred form of details, is shown in the ings, in which Figure -l is a perspective view of the improved chuck.

Fig. 2 is a vertical longitudinal central section of the same.

Fig. 3 is a perspective view of-the work holding clamp usedwith the chuck.

Fig. 4 is a vertical section showing. the

mounting of the work holding in Fig. 3.

The improved chuck comprises a base 1, preferably formed with a central threaded aperture 2, and having means whereby such base may be secured to a bench or other support when desired. The base is formed with a substantially semi-spherical socket 3, and the outer surface of the base about clamp shown the upper edge of said socket is exteriorly threaded as at 4:.

The holder 5 comprises a cyllndrical body of appropriate length, terminating at the lower end in a spherical head 6 adapted tofit more or less snugly into the socket 3. A clamping ring 7 is adapted to fit over the head 6 and bear upon the same above the socket, said clamping ring having threaded connection 8 with'a threaded section 4 of the base. By this construction it is appar- Specification of Letters Patent. 7 Pate td I ably provided with accompanying draw Feb. 22, 1%?311.

' Application filed March 22. 1920. Serial No. 367,802. g

ent that the work holder is capable of substantially any annular adjustment with relation to the base, and when so adjusted may be fixed in such position through the clamping ring 7. The ring 7, while ordinarily capable of being set by the hand, is preferwrench openings 9 whereby an unusually tight set may be secured if desired, and to assist in preventing any possibility of movement of theholder when once fixed, both socket 3 and the clamping ring 7 may be formed with re-- cesses to receive strip 10.

The holder 5 is formed with a longitudinal bore 11 extending through the same, enlarged at the upper end at 12 to receive split jaws 13,, set into the enlargement. The

a fiber or other friction V outer surface of the holder at the upper end is threaded'at 141130 receive a set nut 15, the wall of the central opening of which is inclined at 16, to cooperate with inclined edges 11 clamping of said jaws 13 on the work may be readily obtained by the proper action of the set nut 15.

of the split jaws 13. Obviously the p For work of a different character, particularly where the work is to be turned from time to time, there is provided an additional work clamp comprising jaws '18 adapted to be set through clamp screws 19, and supported on or as a part of a sleevelike member 20. The sleeve 20 isadapted to fit over the upper end of a holder 5, and is provided with a spring pressed-locking pin 21 adapted to engage a recess 22 in the holder 5. A set screw 23 located in the sleeve 20 diametricallyopposite the pin 21, will also seat.

in the recess 22, which is of course an annular channel and thus the work clamp may be turnedto any position. and temporarily held in that position by the obvious use of the setscrew 23; y

In the use of the chuck the base may be fastened to the bench and if the operator is cutting stencils or seals the jaws 13 may be Of courseto the face plate or spindle of dividing head, spring-pressed pin carried by the sleeve to 10 and the body 5 adjusted to any angle. normall seat in said channel, a set screw lVhat I claim is: I l carried y the sleeve to be moved into said A Work-holding body supported at one channel to hold the member fixed with rela- 5 end for universal movement, said body being tion to the body, and a fixed jaw and a relaformed remote from its universal mounting tively adjustable jaw carried by and ar- 15 with an annular channel, a work-holding ranged beyond the sleeve. member comprising a sleeve to rotatably fit In testimony whereof I afiix m signature. over the body and cover said channel, a JOHN J., EILLY. 

